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SN8P2604A Datasheet(PDF) 79 Page - SONiX Technology Company |
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SN8P2604A Datasheet(HTML) 79 Page - SONiX Technology Company |
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79 / 101 page  SN8P2604A 8-Bit Micro-Controller SONiX TECHNOLOGY CO., LTD Page 79 Version 0.3 8.3.3 TC1C COUNTING REGISTER TC1C is an 8-bit counter register for TC1 interval time control. 0DDH Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 TC1C TC1C7 TC1C6 TC1C5 TC1C4 TC1C3 TC1C2 TC1C1 TC1C0 Read/Write R/W R/W R/W R/W R/W R/W R/W R/W After reset 0 0 0 0 0 0 0 0 The equation of TC1C initial value is as following. TC1C initial value = 256 - (TC1 interrupt interval time * input clock) Example: To set 10ms interval time for TC1 interrupt. TC1 clock source is Fcpu (TC1KS=0). High clock is external 4MHz. Fcpu=Fosc/4. Select TC1RATE=010 (Fcpu/64). TC1C initial value = 256 - (TC1 interrupt interval time * input clock) = 256 - (10ms * 4MHz / 4 / 64) = 256 - (10-2 * 4 * 106 / 4 / 64) = 100 = 64H The basic timer table interval time of TC1. High speed mode (Fcpu = 4MHz / 4) Low speed mode (Fcpu = 32768Hz / 4) TC1RATE TC1CLOCK Max overflow interval One step = max/256 Max overflow interval One step = max/256 000 Fcpu/256 65.536 ms 256 us 8000 ms 31250 us 001 Fcpu/128 32.768 ms 128 us 4000 ms 15625 us 010 Fcpu/64 16.384 ms 64 us 2000 ms 7812.5 us 011 Fcpu/32 8.192 ms 32 us 1000 ms 3906.25 us 100 Fcpu/16 4.096 ms 16 us 500 ms 1953.125 us 101 Fcpu/8 2.048 ms 8 us 250 ms 976.563 us 110 Fcpu/4 1.024 ms 4 us 125 ms 488.281 us 111 Fcpu/2 0.512 ms 2 us 62.5 ms 244.141 us |
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